Font not showing on Windows (taking space)

(Complete font newbie here) I took a stock font and created a certain glyph which was the combination of other glyphs

The steps involved were:

• Open in fontforge, and then save the font as dir.


• Use http://ift.tt/1x5005T (code in German). method ersetzen_durch_Kompositglyph in the said python script can combine two glyphs into one. I created a long word after tacking one char onto other. I then delete everything but A-Za-z, and all the temporary chars involved in the process.


• Then generate font using Fontforge by opening the dir into it. I generate ttf, woff, svg versions, and convert ttf to eot using an online converter. More here: Make a character in a font look like multiple characters of the same font

I then embedded the font in my webpage. The problem I'm facing is that while my webpage display fine on some browser + OS combinations and not on others. Here's the combination: Linux = Ubuntu 13.04

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  Displays perfectly: Win10 + IE, Linux + Firefox, Linux + Chrome, Linux+PhantomJS

  
  


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  Doesn't display the long glyph but shows empty space that long. Win10 + Firefox, Win10 + Chrome, Win7+Firefox, Win7+IE

  
  


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  Displays space 1 glyph long Win7+Chrome, Win10+PhantomJS

  
  

Would anyone know why this is happening, and if there is a solution to this?